OT-2026-000002450
Publication integrity record
Levelling ramp assembly
This page is the evidence record. It changes as evidence arrives: a trusted timestamp, an independent retrieval, a custody deposit. The disclosure itself (/p/OT-2026-000002450) never changes.
Identity and time
| Publication number | OT-2026-000002450 · never reused |
|---|---|
| Internal UUID | 01a0a67c-c4e1-7872-91bd-df9dc60514c1 · UUIDv7, RFC 9562 |
| Publication timestamp | 2026-09-15T19:13:09.858307Z Recorded by the publication infrastructure in UTC, not taken from the submission. |
| Canonical URL | https://opentechnical.org/p/OT-2026-000002450 |
| Status | PUBLIC |
Content hashes
| Canonical text | 0a5c73f22834f4fa8c1bf76aae31c827fb040224c359d7acd253794567cb3492 |
|---|---|
| Markdown | e1f2ee1015617cc85f31ff35192eaffed7865fe48164b56187e9f2d37b18be41 |
| Publication page | 8be55f0d8c359b05467e24309889bdf6e47858b1db7c3d6bd2035e49c2ad1025 |
| Manifest | cd51125ef0a77ab6e68bae13d2218059621373a8f12dfbe3c043ff963bd8efbf |
SHA-256, lowercase hex, over the exact bytes of each published file. Every figure is hashed individually in the manifest.
Manifest signature
| Algorithm | Ed25519 · key
OT-SIGN-2026-01 · Verified |
|---|---|
| Signature | +a4n1x8LhN+h5CQgdNnJoVQzR9IQl+FGANl3z2nb4gmdFqvmc5bVT4f3d7YlFGuExoe5D3I2bs68Od5wWxy1Cg== |
| Public key | /integrity/keys · every key we have ever used stays published |
Trusted external timestamp
| timestamp.digicert.com | 2026-09-15T19:27:02Z batch OT-TS-2026-W38-002 · RFC 3161 token · inclusion proof root 2d7e364e718bd6a32072ec57f9edc195... |
|---|
Independent retrieval
| 2026-09-15T19:40:14.039762Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002450observed 8be55f0d8c359b05467e24309889bdf6...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
|---|---|
| 2026-09-15T19:40:14.011512Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002450/manifest.jsonobserved cd51125ef0a77ab6e68bae13d2218059...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
| 2026-09-15T19:40:13.998400Z | HTTP 200 · MATCHhttps://opentechnical.org/p/OT-2026-000002450/publication.txtobserved 0a5c73f22834f4fa8c1bf76aae31c827...fetched by instance-3.rotem.ai from 127.0.0.1, which resolved the name to 35.239.157.139 |
Requested from infrastructure separate from the publication system, over the public internet, with no credential. A MATCH means an ordinary internet client could fetch the publication and received exactly the bytes recorded above.
Independent archive
| External archive | Pending Canonical URLs are submitted to an independent archive in batches. |
|---|
A capture held by an outside archive is evidence that does not depend on OpenTechnical continuing to exist. It supplements the records above; it does not replace them.
Third-party custody
| OT-CUSTODY-2026-W38 | OpenTechnical-Custody-2026-W38.tar.zstf2fc69d02142424a578267e5e3a6d3bb... · 402,218,449 bytes · held by held on site pending an external custodian · retention permanent |
|---|